Crathco / Grindmaster TEA-300 User manual

Brand: Crathco / Grindmaster

Model: TEA-300

Type: User manual

1103 Form # AM-325-04

Part # A090-103

American Metal Ware® Tea Brewers

Operation and Instruction Manual

for

TEA-300

Tea Brewer Series

Grindmaster Corporation, 1999

PRINTED IN THE USA

TABLE OF CONTENTS

Prior authorization must be obtained

from Grindmaster Corporation for all

warranty claims.

Warning Labels . . . . . . . . . . . . . . . . . . . . . . . .2

Set Up/Position . . . . . . . . . . . . . . . . . . . . . . . .3

Water Hook-Up . . . . . . . . . . . . . . . . . . . . . . . . .3

Electrical Requirements . . . . . . . . . . . . . . . .3-4

Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . .4

Use Control Functions . . . . . . . . . . . . . . . . . . .4

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Cleaning Procedures . . . . . . . . . . . . . . . . . .6-7

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

Troubleshooting Guide . . . . . . . . . . . . . . . .9-10

Exploded View . . . . . . . . . . . . . . . . . . . . . .11-12

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . .13

Grindmaster Corporation

4003 Collins Lane

Louisville, Kentucky 40245 USA

(502) 425-4776 800-695-4500

(800) 568-5715 (technical service only)

FAX (502) 425-4664

www.grindmaster.com

TEA-300

American Metal Ware

Tea Brewers Page 2

Warning Labels

The following warning and caution statements are contained in different sections of this manual.

Please read this manual and follow all safety precautions when operating or servicing this

equipment.

WARNING: ELECTRIC SHOCK HAZARD

ONLY QUALIFIED SERVICE PERSONNEL SHOULD PERFORM INSTALLATION OF THIS

APPLIANCE. IMPROPER INSTALLATION COULD RESULT IN ELECTROCUTION.

CAUTION: HOT LIQUID HAZARD

WATER USED FOR BREWING TEA IS VERY HOT. USE CAUTION WHEN BREWING,

POURING, OR TRANSPORTING HOT TEA. NEVER ATTEMPT TO MOVE THE BREWER

WITHOUT FIRST DRAINING THE WATER TANK. ACCIDENTAL SPILLS MAY RESULT IN

SEVERE BURNS.

WARNING: BURN HAZARD

HOT LIQUIDS AND SURFACES ARE PRESENT IN THIS EQUIPMENT. TO AVOID BURNS

USE CAUTION WHEN CLEANING. RINSE HOT PARTS WITH COLD WATER BEFORE

CLEANING. USE GLOVES OR HEAVY CLOTH WHEN REMOVING HOT PARTS FROM

BREWER.

WARNING: ELECTRIC SHOCK HAZARD

NEVER USE THE GROUND CONDUCTOR AS A NEUTRAL. THIS COULD CAUSE

ELECTROCUTION.

CAUTION: HOT LIQUID HAZARD

TEA BASKET CONTAINS VERY HOT LIQUID UNTIL THE DRIP-THROUGH IS COMPLETED.

EARLY REMOVAL OF THE BASKET COULD RESULT IN BURNS.

! WARNING: ELECTRIC SHOCK HAZARD

DANGEROUS ELECTRIC VOLTAGES ARE PRESENT NEAR ADJUSTABLE COMPONENTS.

ONLY QUALIFIED SERVICE PERSONNEL SHOULD MAKE ADJUSTMENTS.

WARNING: BURN HAZARD

HOT LIQUIDS AND SURFACES ARE PRESENT IN THIS EQUIPMENT. TO AVOID BURNS

USE CAUTION WHEN SERVICING EQUIPMENT. ALLOW UNIT TO COOL BEFORE SER-

VICING EQUIPMENT.

Set-Up / Position

1. Position the brewer on a strong, stable counter top or table.

2. Check the level front to back and side to side. Adjust the legs to the correct level.

3. See rough-in drawing in this manual for dimensions and locations of electrical and water input.

Water Hook-Up

IMPORTANT

WATER PIPE CONNECTIONS AND FIXTURES DIRECTLY CONNECTED TO A POTABLE WATER SUPPLY

SHALL BE SIZED, INSTALLED, AND MAINTAINED IN ACCORDANCE WITH FEDERAL, STATE AND LOCAL

CODES.

1. The water line should be a 1/4" (6.35 mm) copper or flexible water line to prevent strain. Do not use low tempera-

ture plastic tubing. The connector on the fill valve is a 1/4" (6.35 mm) male flare fitting.

2. Water line pressure must be from 30 to 70 psi.

3. Install a shut-off valve near the brewer.

4. Install a backflow prevention device that conforms to ASSE Standard #1024.

IMPORTANT

THIS EQUIPMENT IS TO BE INSTALLED WITH ADEQUATE BACKFLOW PROTECTION TO COMPLY WITH

APPLICABLE FEDERAL, STATE AND LOCAL CODES.

5. Installing a filtering system can improve the taste of brewed tea and extend the life of the brewer. The use of a

filter is especially important if your water has a high calcium (lime), chlorine, or iron content. Contact our

Technical Service department to select the filter for your water conditions.

Electrical Requirements

IMPORTANT

THE PERSON INSTALLING THIS APPLIANCE IS RESPONSIBLE FOR ENSURING THAT ELECTRICAL

CONNECTIONS MEET THE REQUIREMENTS OF THE NATIONAL ELECTRIC CODE, STATE AND ANY

LOCAL CODES.

1. The electric ratings for your brewer are printed on its nameplate. The electrical rating is one of the following:

• 120 Volt, 15 Amp, 1 Phase

• 120/208-240 Volt, 20 Amp, 1 Phase, 4 supply wires

2. The brewer should be connected to its own circuit with a fused disconnect switch or a circuit breaker near the

brewer.

American Metal Ware

Tea Brewers Page 3

WARNING: ELECTRIC SHOCK HAZARD

ONLY QUALIFIED SERVICE PERSONNEL SHOULD PERFORM INSTALLATION OF THIS

APPLIANCE. IMPROPER INSTALLATION COULD RESULT IN ELECTROCUTION.

Electrical Requirements (cont.)

3. The body of the brewer must be grounded. A ground lug is provided for this purpose.

Initial Start-Up

1. Turn on the water supply to the brewer. Check for leaks at supply line to fill valve connection.

2. Make sure the power switch is turned to the “Off” position. The power switch is located on the upper back

panel of the brewer.

3. Plug in the unit’s power cord into a properly grounded receptacle.

4. Place the brew basket into the brew rails of the brewer.

5. With the dispenser’s cover removed, place the tea dispenser onto the tea brewer’s base.

6. The water tank needs to be primed. Press the Start switch to begin filling the water tank. After approximately

5 minutes the brew will terminate and the water fill valve will turn off. Drain off the dispensed water from the

dispenser and press the Start switch again to continue. You will have to perform this step until the water begins

to exit through the sprayhead. When this occurs, press the Stop switch. At this point the water tank is primed.

7. Turn off the power switch to energize the heating element.

8. When the water temperature has reached the preset temperature the Water Hot lamp will illuminate. This may

take between 15 and 35 minutes.

9. Check the brewer water temperature at the sprayhead. If the temperature needs to be adjusted, refer to

Adjustments section of this manual for instructions.

Use Control Functions

Power Switch: Controls the power to the heating element for the water tank.

Start Switch: Press to start a brew cycle.

Stop Switch: Pressing this switch during a brew cycle stops the cycle prematurely. Note: After the switch is

pressed, adequate time must be given to drain the brew basket before removing from the unit.

Hot Water Light: Light illuminates when the water reaches the proper brewing temperature.

American Metal Ware

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WARNING: ELECTRIC SHOCK HAZARD

NEVER USE THE GROUND CONDUCTOR AS A NEUTRAL. THIS COULD CAUSE

ELECTROCUTION.

CAUTION: HOT LIQUID HAZARD

TEA BASKET CONTAINS VERY HOT LIQUID UNTIL THE DRIP-THROUGH IS COMPLETED.

EARLY REMOVAL OF THE BASKET COULD RESULT IN BURNS.

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Operation

1. Place an empty tea dispenser on the base of the tea brewer. The placement should allow the bypass and the

brew basket drain to empty into the container.

2. Remove the brew basket and line it with a paper filter. Paper size is 13" x 5" (Filter #BB1.5WP).

3. Place tealeaves in the filter basket. Your tea supplier can help you select the right amount of tea to use. Tea

experts recommend 1 oz. (28 g) of loose tea for each gallon (3.8 litre) of finished product.

4. Slide the basket into the brewer, making sure the basket is pushed completely back. In the proper position the

basket and the dispenser are pushed back onto the brewer.

5. Check that the Water Hot light is illuminated. If not then wait for the water to reach proper brewing temperature

and the light will turn on.

6. Press the Start switch to start the cycle. Total brew time is dependent upon brewer settings.

7. During the brewing process the hot tea is mixed with cold water in the dispenser. Add sweetener if desired and

serve over ice.

8. After brewing place the cover over the tea dispenser to keep fresh.

9. Dump the used tea and filter from the basket and rinse for the next brew.

Adjustments

All adjustable components are located under the top cover or behind the lower front cover.

Timer Adjustment

Change timer setting if the total volume of dispensed liquid requires adjustment.

1. Shut off power and unplug the brewer.

2. Remove the screw fastening the top cover. Remove the top cover by pulling

forward and lifting upwards.

CAUTION: HOT LIQUID HAZARD

WATER USED FOR BREWING TEA IS VERY HOT. USE CAUTION WHEN BREWING,

POURING OR TRANSPORTING HOT TEA. NEVER ATTEMPT TO MOVE THE BREWER

WITHOUT FIRST DRAINING THE WATER TANK. ACCIDENTAL SPILLS MAY RESULT IN

SEVERE BURNS.

WARNING: ELECTRIC SHOCK HAZARD

DANGEROUS ELECTRIC VOLTAGES ARE PRESENT NEAR ADJUSTABLE COMPONENTS.

ONLY QUALIFIED SERVICE PERSONNEL SHOULD MAKE ADJUSTMENTS.

Figure A

CAUTION: HOT LIQUID HAZARD

TEA BASKET CONTAINS VERY HOT LIQUID UNTIL THE DRIP-THROUGH IS COMPLETED.

EARLY REMOVAL OF THE BASKET COULD RESULT IN BURNS.

American Metal Ware

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Timer Adjustment (cont.)

3. This timer is adjustable from 15 seconds to 8 minutes.

4. Make the desired adjustments by turning the adjusting knob clockwise to increase timer setting; turning counter

clockwise to reduce time.

5. Re-install top cover with screw then plug unit in, return to use.

Thermostat Adjustment

Change thermostat setting if spray over water temperature requires adjustment. Factory setting is 195°F (90.56°C).

This is the ideal temperature for brewing tea. Water should never boil in the tank. If water is boiling in the tank,

adjust the temperature appropriately.

1. Shut off power and unplug the brewer.

2. Remove the screw fastening the top cover. Remove the top cover

by pulling forward and upwards.

3. Locate thermostat mounted on tank.

4. Turn the shaft clockwise to increase the water temperature, counter

clockwise to decrease water temperature. (Refer to Figure B.)

5. Re-install top cover with screw then plug unit in and return to use.

Bypass Adjustment

Change bypass adjustment if desired volume of brewed liquid requires

adjustment.

1. Shut off power and unplug the brewer.

2. Remove the lower front panel by removing the screws securing the panel.

3. Make the desired adjustments by turning the adjusting knob clockwise

to decrease the total brewed volume; turning counter clockwise to

increase volume.

Cleaning Procedures

Cleaning After Each Brew

Dispose of used tealeaves and rinse brew basket.

Figure B

Figure C

! WARNING: BURN HAZARD

HOT LIQUIDS AND SURFACES ARE PRESENT IN THIS EQUIPMENT. TO AVOID BURNS

USE CAUTION WHEN CLEANING. RINSE HOT PARTS WITH COLD WATER BEFORE

CLEANING. USE GLOVES OR HEAVY CLOTH WHEN REMOVING HOT PARTS FROM

BREWER.

Cleaning Procedures (cont.)

Daily Cleaning

Cabinet: The outside of the machine can be cleaned with a damp cloth, a household dusting spray or a stainless

steel cleaner. Do not use an abrasive such as Scotchbrite or Brillo pads. These may mar the finish.

Wipe the underside of the cabinet hood with a clean cloth. Be especially careful when using soap or detergent

around the sprayhead. Any soap left on the deflector may impart an unpleasant taste to the first brews.

Weekly Cleaning

Brew Basket: Use commercial grade urn cleaner (as directed by manufacturer) and rinse thoroughly.

Service

The remainder of this manual contains information to aid the service person making repairs to this equipment. This

section has information on performing common service tasks. A section on troubleshooting follows and can be used

to help determine the cause of problems with the equipment.

An illustrated parts breakdown follows and will aid in correctly identifying replacement parts. For factory assistance,

call 1-800-695-4500 between 8:00 a.m. and 5:00 p.m. Eastern time.

Finally, wiring diagrams are provided for the various models covered by this manual.

To Drain Water Tank

1. Turn off the power to the brewer and allow to cool before draining.

2. Remove the lower front panel.

3. Pinch or clamp the tube from the needle valve assembly to the tank and

disconnect the tube from the needle valve assembly. Place the tube over

a drain, release the clamp, and allow the tank to drain.

4. Reconnect tube to bottom of tank when finished draining.

American Metal Ware

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WARNING: BURN HAZARD

HOT LIQUIDS AND SURFACES ARE PRESENT IN THIS EQUIPMENT. TO AVOID BURNS

USE CAUTION WHEN CLEANING. RINSE HOT PARTS WITH COLD WATER BEFORE

CLEANING. USE GLOVES OR HEAVY CLOTH WHEN REMOVING HOT PARTS FROM

BREWER.

Figure D

To Remove the Water Tank Heating Element

1. Disconnect the power cord and remove the top cover.

2. Disconnect the wire leads to the heater and thermodisc.

3. Remove the spray head and the spray head nut.

4. Remove the tank cover after removing the (8) nuts securing

the cover to the tank. Lift the tank cover with the heating

element attached.

5. Remove the thermostat bulb bracket retaining the thermostat

bulb to the heating element.

6. Remove the heating element from the tank cover.

7. Replace the heating element with the sealing washers in the

same configuration; hold the element so that it does not twist

when tightening the element nuts.

8. Reinstall the tank cover in reverse order beginning with

item number 5.

American Metal Ware

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Figure E

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TROUBLESHOOTING GUIDE

Problem/Cause

Remedy

Weak tea

• Not enough tea used

• Water not hot enough

• Sprayhead clogged

• Tea steeping time too short

• Use 1 oz. (28 g) tea per 1 gallon (3.8 litre) finished product

• Wait for Water Hot light to illuminate

• Check sprayhead temperature, should be greater than

185° F (85°C)

• Remove sprayhead for cleaning. Follow cleaning procedures

for sanitizing

• Water ratio of bypass to spray over not set properly, ideal

setting is 70 to 90 oz. (1960 to 2520 g) of hot water for

3 gallons (11.4 litres)

Strong tea

• Too much tea used

• Tea steeping time too short

• Use 1 oz. (28 g) tea per gallon (3.8 litre) finished product

• Water ratio of bypass to spray over not set properly, ideal

setting is 70 to 90 oz. (1960 to 2520 g) of hot water for

3 gallons (11.4 litres)

Grounds in tea

• Paper filter collapsed during brewing

• Using filter packs

• Use proper filter

• Add screen kit to brew basket

Brew basket overflowed

• Volume of hot water set too high

• Brew basket drain blocked

• Water ratio of bypass to spray over not set properly, ideal

setting is 70 to 90 oz. (1960 to 2520 g) of hot water for

3 gallons (11.4 litres)

• Paper filter collapsed during brewing

• Add screen kit to brew basket

Unpleasant taste

• Tea dispenser or brew basket needs cleaning

• Water tank has lime build-up

• Taste is coming from water supply

• Clean and sanitize

• De-lime water tank

• Install a water filtration system

Brew volume too large or too small

• Timer setting set too long or too short

• Water service not supplying adequate water

pressure or flow rate

• Adjust timer to desired value

• Water pressure measured at the unit’s water inlet valve

should be between 30 psi to 70 psi delivering a minimum of

1 gallon (3.8 litre) per minute

Brew volume erratic (small variations from

batch to batch are normal)

• Water supply pressure fluctuates

• Fill valve faulty or clogged

• Plumb water supply so that water pressure is not significantly

affected by other appliances

• Check for power at fill valve when unit is calling for water. If

water flow is slow or valve not operating then repair valve

Sprayhead will not stop dripping water

• Brew valve does not close completely

• Visually inspect valve. Clean lime from valve. Seat, cup, or

entire valve may need replacement

Water boiling in water tank

• Temperature in water tank too hot

• Reduce the water tank temperature. Adjustment knob is

located on the control board face

BREWING PROBLEMS

Only a qualified service technician should perform electrical and mechanical adjustments or

repairs. Always disconnect power before attempting any maintenance procedures.

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Problem/Cause

Remedy

Overfilling of water tank when power is off

• Fill valve not sealing properly

• Disassemble, clean and reassemble valve. If needed service

kits are available

Overfilling of water tank when power is on

• Fill valve not sealing properly

• Fill valve not de-energizing

• Disassemble, clean and reassemble valve. If needed service

kits are available

• Check wiring of timer, switches and fill valve, if o.k.

then defective timer board

FILLING PROBLEMS

Problem/Cause

Remedy

Water is hot but hot light not illuminated

• Light burned out

• Replace light

Water tank will not heat

• Thermostat faulty or out of calibration

• Bad electrical connection of heating circuit

• Recalibrate thermostat. If no remedy or thermostat does

not cycle, replace thermostat

• Check each electrical connection of heating circuit

Recovery time is very long

• Bad electrical connection of heating circuit

• Bad high limit switch

• Faulty heating element

• Check each electrical connection of heating circuit

• Check resistance across high limit switch, should be no

resistance. If resistance present then replace

• Check resistance across element with power conductors

disconnected. If resistance is much less than 8 Ohms or

much more than 15 Ohms, replace part

HEATING PROBLEMS

If you still need help, call our service department at (800) 568-5715 (Monday through Friday, 8 am - 6 pm EST) or an

authorized service center in your area. Please have the model numbers ready so that accurate information may be

given.

Prior authorization must be obtained from Grindmaster Corporation’s Technical Service Department for all

warranty claims.

American Metal Ware

Tea Brewers Page 11

Tea-300 Isometric

American Metal Ware

Tea Brewers Page 12

Tea-300 3-Gallon Dispenser Isometric

American Metal Ware

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Tea-300 Wiring Schematic

Crathco / Grindmaster TEA-300 User manual

Crathco / Grindmaster TEA-300 User manual

Crathco / Grindmaster TEA-300 User manual

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